Swing bob



3 Sept. 20, 1927.

1,642,740 W. MITCHELL SWING B-OB Filed March 15. 1926 2 Sheets-Sheet 1 INVEN TOR.

Sept. 20, 1927.

1,642,740 w. MITCHELL SWIFNG BOB Filed March 15. 1926 z Sheets-Sheet 2 v TTORNEYS.

I Patented Sept. 20,1927.

@i' WILLIAM MITCHELL, or MILWAUKEE, WISCONSIN, Ass'ro'non 'ro MITCHELL MANU- "P TEN OFFICE.-

'FACTUBING COMPANY, or MILWAUKEE, isconsin; A ooRroRA'rio v or wis- CONSIN;

This invention relates to improvements in swing bobs.

It is one of the objects of the present invention to provide a novel form of swing for playground installation for children.

A further object of the invention is to provide a swing having a unique motion and safe to children operating and using the same.

A further object of the invention is to provide a swing adapted to move in a horlzontal plane at all times parallel with the ground.

A further object of the invention is to provide a swing device having an elongated seat adapted to accommodate a plurality of children.

A. further object of the invention is to provide a swing bob which is of very simple construction, is easy and smooth in operation, is easily installed, is strong and durable, and is well adapted for the purposes set forth.

VVit-h the above and other objects in v ew the invention consists of the improved swing bob, and its parts and combinations as set forth in the claim, and all equivalents thereof.

In the accompanying drawing in which the same reference characters indicate the same parts in all of the views:

Fig. 1 is a perspective View ofthe 1mproved'swing bob;

Fig. 2 is an enlarged detail view showing a bifurcated member which receives the upper ends of a pair of legs;

Fig. 3 is an enlarged end view of the seat showing its mounting;

Fig. 4 is a side view of the seat and mounting and on a larger scale, part being broken away and shown in section;

Fig. 5 is a detail sectional viewtaken on line 5-5 of Fig. 4:; i

Fig. 6 is a cross-sectional view through the seat and illustrating the supporting arm for the guard or back;

Fig. 7 is an enlarged detail view of the bearing arrangement for the swinging supporting arms; and

Fig. 8 is a sectional view thereof taken on line 8-8 of Fig. 7.

Referring now more particularly to the drawing, it will appear that the numerals 10 indicate a pair of standards or supports from and between which an elongated seat is suspended. Each standard comprises two SWING BOB.

Application filed March? 15, 1928. Serial No. 94,814.

pairs. of downwardly diverging legs 11 adapted to be partially embedded in the ground. The legs are tubular in construction and the upper portions thereof fit into the shanks 12 of bifurcated joint members 13, set screws 1 1 also being provided. The upper end portions of the joint members also receive the ends of U-shaped top transverse tubular bars 16.

Projecting laterally inwardly from each joint member is a pin 17 upon which is 'pivotally mounted a rocker link 18, held thereon by a cotter pin 19. Each rocker link is formed with a transverse bore 20 and a communicating groove 21 to receive the end portion of an arm 22, the extreme end portion of the arm being bent angularly to enter said bore. A U-bolt 23 further secures the arm to the rocker link.

The arms 22 are two in number andare U-shaped and each arm supports the end portion of the elongated seat 24, as shown. The transverse portions of the arms are secured to the seat by means of tubular bearing brackets 25 secured to the undersurface of the seat near each end, the arrangement of the bearing brackets being such that the arms may turn therein.

The seat 24L is braced longitudinally by a member 26 bolted against its undersurface, as shown in Figs. 4, 5, and 6. To form a back or rail for the seat, an elongated rod 27 is provided, bent downwardly at its end portions and formed with looped ortions 28 secured about the bearing brac ets 25, as shown in Fig. 3. The intermediate portions of the rail are braced by Vertical supports 29 whose lower end portions are angular and bolted to the seat. The upper ends of the supports 29 are formed with clamps 30 to engage and receive the rail 27.

The swing, obviously, is a playground device especially designed for children and constructed so that they may not be readily injured thereby. There is ample clearance between the seat edges and the supports to prevent striking the same and upper members 16 are arched so that a person may stand on the seat and not strike his head against one of said members. It will also be noted that the motion of the swing is unique in that the seat at all times remains in the same plane and parallel to the ground, and there can be no side movement of the same to strike the standards.

From the foregoingdescniption Will be seen that the improved swing bob is o-f 'very simple and novel construction, and: is- Well adapted forv the purposes described.

What I claim as my invention-1's:

In a playground apparatus, the combination with a plurality of socket member-s- "adapted to receive supporting elements, of pins projecting from said socket members,

10 an oscillating link pivotally and removably mounted on eachof said pins; each link being formed with a transversebore and a communicating groove, suspension arms for said Links engaging said grooves and havingangular end portions-enteringsaid bores, and U-bolts 'removably clamping the. and portions of said arms to said linksQ In testimony whereof, I afiix my signature. i I

WILLIAM MITCHELL. 

